ASoC: SOF: Add min_fragment_size member to struct sof_compr_stream

The minimum fragment size for a compressed stream cannot be static since
we can have different sized host DMA buffer, which means that the DMA
can burst in higher steps than the decoder/encoder's processing block
size.

The new member in sof_compr_stream can be used to store this limit at
runtime and be used to configure and validate the buffer setup.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>

Author: ujfalusi

sound/soc/sof/sof-priv.h

@@ -115,6 +115,7 @@ struct sof_compr_stream {
 	u32 sampling_rate;
 	u16 channels;
 	u16 sample_container_bytes;
+	u32 min_fragment_size;
 	size_t posn_offset;
 };